Application of Electronic Anti-theft System in Store Anti-theft
After 40 years of development, the electronic anti-theft system has evolved from an early single principle single product to a variety of different principles nowadays, which meets the needs of different types of stores such as department stores, supermarkets, specialty stores, and libraries.
1. It is subdivided from the form of protection and can be divided into vertical system, concealed system and channel system.
The detection device of the vertical system stands prominently at the entrance and exit of the shopping mall, in addition to the detection function, it also has obvious deterrent effect.
Concealed system is to install the system concealed under the carpet or ceiling of the exit. It does not affect the overall environment of the store, but also plays the role of anti-theft protection to meet the needs of the owner who is both beautiful and anti-theft.
The channel system is to connect the EAS system with the cash register at the exit of the supermarket to form a channel protection, which is an effective method to realize the anti-theft of the supermarket.
2. It is distinguished by the detection signal method applied, which can be roughly divided into radio system, electromagnetic wave system, microwave system, frequency division system, intelligent system and acoustomagnetic system.
(1) Acoustomagnetic system
The tuning fork causes resonance only at the same oscillation frequency. Acoustomagnetic system (Acusto MagneTIc) uses this physical principle to achieve almost zero false alarms. When the acoustomagnetic system label fixed on the product enters the detection area of ​​the system, resonance will occur, but only at the receiver After four consecutive resonance signals (once every 1/50 second), the alarm is issued.
The characteristics of the acoustomagnetic system are high anti-theft detection rate, almost zero false alarms, good anti-interference, and a protected exit width of up to 3.5 meters. There are two kinds of anti-theft labels, soft and hard, which can protect most types of products in the mall. , And can be degaussed repeatedly, the system can still work normally even beside the POS cash register.
Acoustomagnetic systems include different types of vertical systems, channel systems and concealed systems. There are more than 10 models to choose from. They can be widely used in department stores, supermarkets, specialty stores, audio-visual stores, grocery stores, and pharmacies. Office building and other environments.
(2) Radio system
The radio system (Radio Frequency, RF) uses radio waves as the transmitted and received signals, detects electromagnetic waves in the frequency range of 7.4-8.8MHz, and has a center frequency of 8.2MHz. The interference at 8.5MHz caused by the tag causes an alarm. The biggest advantage of the radio system is the very low system cost and easy installation. However, because its anti-theft tag is a toroidal coil type, the system is susceptible to interference from some items, such as electronic products such as cash registers, metal objects, etc., causing false alarms or non-reporting of the system.
The radio system has two kinds of labels, soft and hard, which can protect most items in the mall. The distance between the two supports is generally not greater than 0.9 meters, and is usually used in shopping malls with only one import and export. There are two types of radio systems, vertical and channel, which are used to protect department stores, clothing stores, supermarkets, etc.
(3) Electromagnetic wave system
The electromagnetic wave system (ElectromagneTIc System) uses electromagnetic waves as the detection signal. The label of the electromagnetic wave system is the smallest and the price of the label is cheap. It can be demagnetized repeatedly, but it is easily affected by magnetic or metallic substances and produces false alarms. The width of the protected exit is generally about 0.9 meters. The system will not affect magnetic objects (such as audio tapes, video tapes, and magnetic cards). The new generation of channel electromagnetic wave system is an electronic anti-theft system controlled by software. It uses digital processing technology to integrate with degaussing system, cash register monitoring, and closed-circuit television monitoring system. The use of fast degaussing board can demagnetize repeatedly, and the system cost is high. There are two types of electromagnetic wave systems, vertical and channel. The application environment is mostly in libraries, bookstores, audio shops, hotels, supermarkets, etc.
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